Window-fastener.



PATEN TED MAR. 13, 1906.

J. \TRAPPORD. WINDOW FASTENER. APPLICATION PiLED JAN. 3, 1905.

2 sums-Sinai 1.

witnesses:

PATENTED MAR. 13, 1906.

- J; TRAFFOBD.

WINDOW PASTENER. APPLICATION FILED JAN. 3, 1905. I

2 SHEETS-$313111 2.

witnesses: I 77/2 &71/t07':

UNITED STATES PATENT OFFICE.

Specification of Letters Patent.

Patented March 13, 1906.

Application filed January 3,1905. Serial No. 239,361.

To aZZ whom it may concern: 1 1

window-sashes and the like, the object of the invention being to provide a cheap and sim- 1prle device which cannot be tampered with om the outside of the house and which will prevent either the lower or the upper sash from being opened beyond a certain extentsay four or five inches'so that a window can be left 0 en and still be locked to prevent burglars om entering the house.

The invention consists in the combination and arrangement of parts set forth in the following specification, and particularly pointed out in the claims thereof.

Referring to the drawings, Fi ure 1 is a perspective view of my improve window-fastener, showing the same attached to the upper and lower sashes of a window with a portion of the casing illustrating its relative position to said window-sashes, said casing and window-sashes broken away to save space in the drawings. Fig. 2 is a section, partly in elevation, taken on line 2 2 of Fig. 1. Fig. 3 is a plan view of a modified form-of my invention. Fig. 4 is a central longitudinal section of the same, partly in elevation, taken on line 5 5 of Fig. 3 and showing the same connected to a portion of an upper and a lower sash, said sashes being shown in section. Fig. 5 is a front elevation of a modified form of lock- A ing-plate used in connection with the modified form of my invention illustrated in Figs. 3 and 4.

Like numerals refer to like parts throughout the several views of the drawin s.

In the drawings, 5 is an upper sas of a window, 6 the lower sash, and 7 the casing.

8 is a locking-plate fastened to the upper sash 5 and provided with a vertical slot 9, having parallel sides 10 11. A recess 12 is provided in the locking-plate 8, near the bottom thereof, adjacent to and opening into the slot 9. A flat spring 13 is fastened to the back of the plate 8 above the recess 12 and extends downwardly adjacent to said recess throughout the entire length thereof and for a short distance below the lower edge of said recess.

A bracket 14 is fastened to the lower sash '6 and has pivoted thereto an arm 15, said arm being provided upon its free end with a lateral projection or hook 16. The arm 15 proj ects through the slot 9 into a groove 17, pro- Vided in the upper sash 5 at the rear of the plate '8.

The 0 eration of the device hereinbefore s ecificall t e parts to be in the position illustrated in Figs. 1 and 2 ,it will be seen that by pushing upwardly on the lower sash or downwardly u on the up er sash said sashes will open to t e extent a lowed by the hooked arm 15- viz., until said sashes arrive at such a point with relation to each other that said arm abuts against the upper end of the slot 9.and after said arm arrives at the upper end of said slot it will be seen that it will be impossible to lower the upper sash or to raise the lower sash to any greater extent. In order to remove the arm 15 from the slot 9 and plate 8, it is necessary to press inwardly or toward the right, Fig. 2, upon the flat spring 13 with one hand and to rock the arm 15 upon its pivot 18 until the hooked end thereof passes through the recess 12 and the main portion of said arm passes out of the slot 9 to the position indicated indotted lines at the top of the lower sash, Fig 2. When said arm has thus been detached from the plate 8, either y described is as follows: Assuming of the window-sashes may be opened to the full extent.

It will be seen that it will be impossible to detach the arm 15 from the plate 8 from the outside of the house without breaking the glass in one of the sashes.

In Figs. 3 to 5 a modified form of my-invention is illustrated in which a lock-plate 19 is supported upon the arm 15 and is slidable longitudinally thereof toward and\away from the pivot 18. Said lock-plate is provided with a handle 20, by means of which it may be moved, and is guided upon the arm 15 to slide longitudinally thereof by two screws-21 21, which pass through a slot 22, provided in said lock-plate and screwed into the arm 15. At the opposite end of the lock-plate 19 to that at which the handle 20 is attachedv ICC , by swinging the arm 15 upon its pivot 18 outsaid lock-plate is readily understood by ref- I claim, and desire by Letters Patent to se moved a certain distance with relation to each other, but also in the same device to provide means whereby said sashes may be locked in their closed position with relation to each other, so that the upper sash cannot be moved downwardly nor the lower sash moved upwardly to any extent.- The operation of erence to Figs. 3 to 5, in which it will be seen that if said lock-plate is moved forward until the lugs 23 thereon enter the notches 24 in the plate 8 it will be impossible to move the upper sash downwardly or the lower sash upwardly, as said lugs would in such case engage the plate 8 immediately below or above, respectively, the notches 24, and thus prevent any relative movement of the sashes with relation to each other. When it is desired to use the device, as hereinbefore described,for the purpose of allowing the sashes to be opened a portion of their height, the lock plate 19 is placed in the position illustrated in Fig. 3 in dotted lines. When it is desired to lock the sashes against any movement, the lock-plate is moved to the position illustrated in full lines in Figs. 3 and 4. When it is desired to move the sashes to their full extent, the locking device is detached from the plate wardly through the opening in the plate 8, as hereinbefore described in relation to the first form of my invention as illustrated in Figs. 1 and 2.

Having thus described my invention, what cure, is

1 A window-fastener comprising in its construction a plate adapted to be fastened to one of a pair of sliding window-sashes, said plate provided with a vertical slot having two parallel sides and a recess at one end thereof, a flat spring fast at one end thereof to said plate, extending longitudinally of and adjacent to said recess, and an arm pivotally supported upon the other of said sashes and adapted to project into said slot, said arm provided upon its free end with a lateral projection adapted to pass through said recess when said arm is rocked upon its pivot.

' 2. Awindow-fastener comprisingin its construction a plate adapted to be fastened to one of a pair of sliding window-sashes, said plate provided with a vertical slot having two parallel sides and a recess at one end thereof and two notches 24, 24, a flat spring fast at one end thereof to said plate, extending longitudinally of and adjacent to said recess, and an arm pivotally supported upon the other of said sashes and adapted to project into said slot, said arm provided upon its free end with a lateral projection adapted to pass through said recess when said arm is rocked upon its pivot, and a lock-plate supported upon said arm and movable thereon toward and away from the pivot of said arm.

3. A window-fastener comprising in its conother of said sashes and adapted to project into said slot, said arm provided upon its free end with a lateral projection adapted to pass through said recess when said arm is rocked upon its pivot, and a lock-plate slidable longitudinally of said arm through said notches and into and out of engagement with said slotted plate.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

JOSEPH TRAFFORD.

Witnessesz' CHARLES S. GooDING. ANNIE J. DAILEY.

struction a plate adapted to be fastened to 

